Coordination behavior between zinc salts and L-α-methionine

被引：25

作者：

Gao, SL ^{[1
]}

Liu, JR

Ji, M

Yang, XW

Zhang, FX

Li, ZJ

机构：

[1] NW Univ Xian, Dept Chem, Xian 710069, Peoples R China

[2] NW Inst Light Ind, Dept Chem Engn, Kianyang 712081, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 1998年 / 43卷 / 18期

关键词：

zinc salts; L-methionine; phase equilibrium; complex; standard formation enthalpy;

D O I：

10.1007/BF02883442

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The solubility properties of ZnCl2/ZnAc2/ZnSO4-Met-H2O systems at 25 degrees C in the whole cocentration range have been investigated by phase equilibrium method. The results indicate that ZnAc2 and ZnSO4 systems are both simple systems, which do not exist any compound; there are 2 complexes formed in ZnCl2 system: Zn(Met)Cl-2 and Zn(Met)(2)Cl-2. 2H(2)O. Under the direction of phase equilibrium result, 2 solid complexes have been prepared in water and characterized by chemical analysis, IR, X-ray diffraction. Their combustion energies have also been determined by means of a RBC-type-1 rotating-bomb calorimeter, and their standard enthalpies of formation, Delta(f,) (coor(s))H-empty set, have been calculated which are (-828.32 +/- 3.00) kJ mol(-1) and (-1 117.08 +/- 6.15) kJ.mol(-1), respectively.

引用

页码：1527 / 1531

页数：5

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